/*
 * Copyright (c) 2010 WiYun Inc.
 * Author: luma(stubma@gmail.com)
 *
 * For all entities this program is free software; you can redistribute
 * it and/or modify it under the terms of the 'WiEngine' license with
 * the additional provision that 'WiEngine' must be credited in a manner
 * that can be be observed by end users, for example, in the credits or during
 * start up. (please find WiEngine logo in sdk's logo folder)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "wyShake.h"
#include "wyNode.h"
#include "wyTypes.h"
#include "wyUtils.h"
#include "wyLog.h"

wyShake::wyShake(float duration, float radius) :
		wyIntervalAction(duration),
		m_radius(radius) {
}

wyShake::~wyShake() {
}

wyShake* wyShake::make(float duration, float radius) {
	wyShake* a = WYNEW wyShake(duration, radius);
	return (wyShake*)a->autoRelease();
}

wyAction* wyShake::copy() {
	return wyShake::make(m_duration, m_radius);
}

wyAction* wyShake::reverse() {
	return wyShake::make(m_duration, m_radius);
}

void wyShake::update(float t) {
	if(t >= 1) {
		m_target->setPosition(m_originalX, m_originalY);
	} else {
		m_target->setPosition(m_originalX + m_radius * wyMath::randMinusOneToOne(),
				m_originalY + m_radius * wyMath::randMinusOneToOne());
	}

	// super only call callback
	wyIntervalAction::update(t);
}

void wyShake::start(wyNode* target) {
	wyIntervalAction::start(target);

	m_originalX = target->getPositionX();
	m_originalY = target->getPositionY();
}
